Means for planing and grading road surfaces



March 27, 1934. E, MONROE 1,952,452

MEANS FOR PLANING AND GRADING ROAD SURFACES Filed Sept. 5, 192-8, 2Sheets-Sheet 1 Jv/arrj Monroe BY w 4;. ATTORNEY.

Patented Mar. 27, 1934 v UNITED STATES PATENT OFFICE UBFACES MEANS FORPLANING AND GRADING ROAD Harry E. Monroe, Loo Angeles, Calif.Application September 5, 1928, Serial No. 304,100 I Claims. (Cl. 94-39)My invention relates to means for planing and smoothing the surface ofand asphalt roads or pavements, and the principal object of my inventionis to provide a new and novel device of the above character that may beeasily and economically operated to cut oil and level or smooth out anyirregularities in the surface of such roadways and to further provide adevice of such a character that will be highly efficient in itsoperation.

Another object of my invention is to provide novel means to first softenthe top surface of an asphalt or macadam roadway prior to leveling thesame without likelihood of injuring the base or foundation of suchroadway.

My invention includes the parts-and combination of parts as well as themethod of planing, grading or smoothing road surfaces as moreparticularly hereinafter described and set forth in detail. e

Other objects, advantages, and features of invention may appear from Ithe accompanying drawings, the subjoined detail description and the 05appended claims.

vention and in which,

Figure 1 is a side elevation of a road planer and grader constructed inaccordance with my invention. Portions are broken away to contract theview and to provide for purposes of clearness.

Fig. 2 is a top plan view of the device shown in Fig. 1, portions beingbroken away for purposes of cleamess and to contract the view.

Fig. 3 is a transverse section on enlarged scale,

taken approximately on line 3--3 Fig. 1.

Fig. 4 is a fragmental cross section taken approximately on line 44 Fig.l. v

Fig. 5 is afragmental ,front elevation of the teeth mounting block andthe teeth withassociated parts disconnected.

The main body or frame of my device comprises a pair of elongate sidemembers 1 which are preferably 1 beams that are spaced a suitabledistance apart and which are framed together by suitable transversemembers 2. The frame 1 is supported at its rear end by a pair of wheels3 that are adjustably mounted in the frame-so as to raise and lower theframe relative to the road surface over which the wheels 3 travel, andthe forward end of the frame 1 is supported by wheels 4 which areconnected to the frame by means of a king bolt Sthat passes through aforward extension member 6 that is vertically connected to uprights '7secured to the upper forward ends of the I beams forming the frame'l. 7

The accompanying drawings illustrate the in-' rear of the frame 1. Theoperation of the burners The forward extension member 6 is fastenedintermediate its ends to the uprights '1 as at 8, and the rear end ofsaid extension member is adiustably secured to the uprights by means ofa bolt 9 that is adapted to be inserted into a selected hole 10 of aplurality of such holes formed in the uprights 7. a I

An oven 11 is adjustably mounted for vertical movement in the frame 1,and comprises side members 12, end members 13 and is lined with firebrick 14 along its sides and over the top, and is provided with slabs ofany suitable fire brick material 15 along the end walls 13. Tie rods 16secure the side members 12 together, and flanges in the form of angleirons 12' secured to the lower edge of the side members 12 prevent thefire brick 14 from dropping out of the oven 11.

The end members 13 are secured to the side members 12 by means of angleirons 1'1 that are suitably secured to the end and side membersrespectively.

As shown, in Figs. 1 and 4 the oven 11 is open at its lower end, and isslidably mounted for vertical movement between guide rails 18, 19,secured to the I beams forming the frame 1. The lower web of the I beamsadjacent the oven are cut away as at a so as to permit the oven to slidebelow the lower edge of the frame 1.

The oven 11 may be raised or lowered by any suitable means and as' showncomprises cross members 20 secured to the side members 12 and to whichcross members is secured a flexible member 21 such as a wire cable orchain that is adapted to be wound upon a shaft 22 that extends acrossto, and is secured in the uprights 7. A handle 23 is provided at one endof the shaft 22 for operation thereof, and a dog and ratchet arrangement24 prevents reverse movement of the shaft 22, and maintains the oven inelevated or lowered position.

Suitable means are provided to permit a flame to be introduced into-theoven 11 as shown, comprising a plurality of burners 25 that extend intothe oven 11 from a header pipe 26 which is supplied with air and fuel bymeans of flexible connections 2'7 and 28 respectively that are connectedto header pipes 29 and 30 respectively that are fastened to the frame 1,the header pipe 29 is supplied with air by connections 31 leading froman air compressor tank 32 which is connected to an air compressor notshown. I

The header pipe 30 is supplied with fuel by means ofsuitableiconnections 33 leading from a fuel tank 34 that is preferablymounted at the is well known in the art and comprises any standardconstruction forming no part of this invention, except in thecombination shown.

To the rear of the oven 11 and spaced therefrom, I provide a pluralityof disintegrators 35 in the form of teeth that have an outwardly flaringcutting surface which are arranged in a V-shape and which overlap onewith the other, and sa d teeth are secured to a mounting block 36 thatis adapted to be raised and lowered by any suitable means, such as thehand wheels 37 that are operably connected to suitable elevating means.

To the rear of and spaced from the disintegrators 35 I provide asmoothing blade 38 that is mounted between the I beams forming the frame1 that is adapted to be raised or lowered relative to the road surfaceby any suitable means, such as the hand wheels 39 and itsconnections.The smoothing blade 38 is disposed at an angle relative to the frame 1so that any loosened particles of pavement will be moved by gravity toone edge of the smoothing blade, and such loosened particles passthrough an opening 40 formed in the side of the frame 1 and are disposedin a furrow outside of the device. f

The machine may be drawn forwardly by a tractor or other suitable motivepower that may be'connected to the tongue member 41. I I v,

It will readily be apparent to one versed in the art that the resultantroad surface'provided from the use of a roller or a scraper will differmaterially, and as will be seen-from the foregoing description, thedevice as'described intends the use of a'scraper to provide thecharacter of road surface resultant frbm such scraper. The use of ascraper on so called asphalt roads or streets requires that thesurfacing material be pre-heated to a certain degree for softening, thenscarified and agitated by contact with a plurality of cutting edges thatthe material be broken into small particles, which is readilyaccomplished by use of thedevice herein described, and further, toremove the excess of material gathered up by the scraper, contact by thescraper with the surface must be made while the surface material isstill heated, and thus leave the new surface material smooth, which,upon cooling, solidified into a hard compact road surfacing of thecharacter desired.

It has been found in practice that in the resurfacing of asphalt pavedstreets in metropolitan areas, that working conditions prohibit the useof the conventional forms ofroad surfacing machinery, and therefore, theapplicant devised the herein described new and novel road surfacingmachine, combining into one operable unit the several elements requiredto do the work desired, producing a unitary machine that at oneoperation of passing over a road surface heats, scarified and planes thesurface, producing a new road surface from the original paving materialpreviously in use as a road surfacing material.

I claim:

1. In a macadam or asphalt road surface planing and grading machine, thecombinationwith a unitary wheeled supporting frame adapted to be drawnalong the road surface, of a road surface heating oven adjustablysupported on said frame, a road surface scarifier comprisinglongitudinally overlapping teeth supported on the frame in position forfollowing in the path of the oven, and a heated "and scarified surfacesmoothing scraper adjustablysupported on the frame in position fortravelling in tho: path of the oven and scarifier for the purpose offinishing said heated and scarified surface in a new plane.

2. In a macadam or asphalt road surface planing and grading machine,having a unitary wheeled supporting frame adapted to be drawn along theroad surface, the combination with an adjustable road surface heatingoven supported on said frame, of a road surface scarifier com-, prisinglongitudinally overlapping teeth supported on theframe in position forfollowing in the path of the oven, a heated and scarified surfacesmoothing scraper adjustably supported on the frame in position fortravelling in the path .of the oven and scarifier, said scraper beingadapted to be adjusted relative to the road surface to remove sufficientmaterial to present a. new plane of road surface and side walls carriedby the frame and closing the sides of the machine down close to the roadsurface from the position of the oven back to and beyond the scraper,one of said walls having an opening therein to pass surplus scrapingsfrom the scraper.

3. In a macadam or asphalt road surface planing and grading machine,having a unitary wheeled supporting frame adapted to be drawn alongtheroad surface, the combination with a road surface heating oven supportedon said frame, of a road surface scarifier supported on the frame in'position for following in the path of the oven, and a heated andscarifled surface smoothing scraper adjustably supported on the frame inposition for travelling in the path of the oven and scarifier, saidscarifiers being in the nature of individual teeth positioned instaggered relation whereby they travel in individual overlapping paths.

4. In a macadam or asphalt road surface planing and grading machine,having a unitary wheeled supporting frame adapted to be drawn along theroad surface, the combination with a supported on the frame in positionfor travelling in the pathof the oven and scarifier, and means on saidframe to effect independent vertical adjustments of the oven, thescarifier and the scraper relative to each other and to the road surfacefor the purpose of producing a new plane of road surface.

5. In a road surfacer the combination with a supporting element having aroad surface heating device, of a road scarifier comprising a pluralityof individual teeth positioned in staggered and overlapping relation toeach other in their direction of travel to contact the entire roadsurface heated by said oven, and road planing means comprising a knifelike scraper adapted to contact said heated and scarified road surfaceand, remove therefrom a predetermined amount of material for the purposeof presenting a new plane of road surface, said removed material beingautomatically deposited to one side of the path of the new road surface.

6. In a road surfacer the combination with a supporting element havingattached thereto a road surface heating device adapted to heat the roadsurface to a predetermined depth, of a scarifier element adapted tocontact the entire surface of the said heated road surface comprising aplurality of longitudinally overlapping teeth adjustably mounted on saidsupport, and a road surface finishing element adiustabiy attached tosaid support comprising a scraper adapted to contact the said heated andscarined road surface to a predetermined depth and remove therefromexcess materiai and deposit the excess material to one side of the pathof the road surfacer for the purpose of providing a'new plane of roadsurface.

7. In a road surfacer the combination with a supporting element havingadjustabiy attached thereto a road surface scarifler, of a scrapingelement adiustabiy attached to said supporting element and adapted tocontact said scarifled road surface and remove therefrom material inexcess nosassa over a predetermined depth of surfacing operation and todeposit said excess material to one side of the path of the roadsurfacer, and an oven ediustabiy attached to said supporting eiementahead of the said scarifler and the said scraper in the path ofoperation and adapted to heat the road surface to a predetermined depthand to a predetermined degree to prepare the road surface to receive theoperations thereon by the said scarifler and scraper, said oven beingformed with an open lower section adjacent the road surface to permitthe passage of heat therefrom to the road surface.

HARRY E. MONROE.

